I can't give 5 stars because not all the holes were pre-drilled. I had to pre-drill the holes for the pivot points, which are the most crucial. The directions tell you where to drill them, exactly, but come on, man! It was a nail biter to trust that the doors would hang straight. Fortunately for me, I have hung 3 or 4 old fashioned bifold doors in my life, so I knew a little about what to expect. These are nice doors with a great track management system. They look great and mine function great. Note I did not plan on using the stick on trim piece that hides the track. If you have hardwood floors, your results may differ from my pics in that there may be a gap at the bottom. This was a 2.5 hour job, with my wife supervising. It would have been longer without her help interpreting the directions. There are many details in small print that I had to experiment with to get the parts to fit in the track correctly. In the end, the directions had the details, but they were hard to find.